GB166594A - Improvements in wireless telegraphy, wireless telephony and the like - Google Patents

Improvements in wireless telegraphy, wireless telephony and the like

Info

Publication number
GB166594A
GB166594A GB2380119A GB2380119A GB166594A GB 166594 A GB166594 A GB 166594A GB 2380119 A GB2380119 A GB 2380119A GB 2380119 A GB2380119 A GB 2380119A GB 166594 A GB166594 A GB 166594A
Authority
GB
United Kingdom
Prior art keywords
battery
wireless
current
grids
key
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2380119A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALBERT GEORGE TEELING CUSINS
SYDNEY BRYDON
Original Assignee
ALBERT GEORGE TEELING CUSINS
SYDNEY BRYDON
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ALBERT GEORGE TEELING CUSINS, SYDNEY BRYDON filed Critical ALBERT GEORGE TEELING CUSINS
Priority to GB2380119A priority Critical patent/GB166594A/en
Priority to FR529321D priority patent/FR529321A/en
Publication of GB166594A publication Critical patent/GB166594A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes
    • H03C1/18—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid
    • H03C1/20—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid modulating signal applied to anode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)

Abstract

166,594. Brydon, S., and Cusins, A. G. T. Sept. 27, 1919. Vacuum, or low-pressure apparatus, arrangements of.-Two three-electrode valves C, D, whose anode-filament paths are included in the supply circuit of a thermionic oscillation generator B, operate to rectify the alternating supply current as well as act as a controlling means. In the normal position of the key, the battery 21 maintains the grids 18, 19 at a negative potential and no current is rectified and supplied to the valve B. When the key is pressed the E.M.F. of the battery 22 opposes that of the battery 21, a positive potential is applied to the grids, and rectified current is fed to the condenser 17 and the anode circuit of the valve B. Reference has been directed by the Comptroller to Specification 151,968, [Class 40 (v), Wireless signalling &c.].
GB2380119A 1919-09-27 1919-09-27 Improvements in wireless telegraphy, wireless telephony and the like Expired GB166594A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2380119A GB166594A (en) 1919-09-27 1919-09-27 Improvements in wireless telegraphy, wireless telephony and the like
FR529321D FR529321A (en) 1919-09-27 1921-01-03 Improvements in wireless telegraphy, wireless telephony and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2380119A GB166594A (en) 1919-09-27 1919-09-27 Improvements in wireless telegraphy, wireless telephony and the like

Publications (1)

Publication Number Publication Date
GB166594A true GB166594A (en) 1921-07-11

Family

ID=10201523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2380119A Expired GB166594A (en) 1919-09-27 1919-09-27 Improvements in wireless telegraphy, wireless telephony and the like

Country Status (2)

Country Link
FR (1) FR529321A (en)
GB (1) GB166594A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434916A (en) * 1943-09-08 1948-01-27 Standard Telephones Cables Ltd Trigger operated carrier telegraph transmitter
US2531301A (en) * 1945-02-08 1950-11-21 Hartford Nat Bank & Trust Co Circuit arrangement for frequency controls

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434916A (en) * 1943-09-08 1948-01-27 Standard Telephones Cables Ltd Trigger operated carrier telegraph transmitter
US2531301A (en) * 1945-02-08 1950-11-21 Hartford Nat Bank & Trust Co Circuit arrangement for frequency controls

Also Published As

Publication number Publication date
FR529321A (en) 1921-11-26

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